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. 2021 Aug 2;379(2206):20200331. doi: 10.1098/rsta.2020.0331

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© 2021 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 5. — (a) Morpho Peleides butterfly image. (b) Interaction of water droplets on the superhydrophobic scales. (c) Two different water repelling mechanisms based in the scale on the left the butterfly scales trap an air layer collectively, resulting in a high contact angle of 160° ± 10° for millimetric droplets and on the right an individual scale is shown with micrometre scale droplet showing the nonlinear surface properties. Adapted with permission from [83]. (d) Longhorn beetle Mesisternus isabellae in the dry/left and wet/right states. (e) Contact angle measurements for the black/left band and coloured/right region of the elytra [84]. (Online version in colour.)